removing test_require method since it is not used anywhere anymore
removing test_require method since it is not used anywhere anymore

--HG--
extra : convert_revision : svn%3A177060d3-6165-4ab0-95eb-642399a075a8/nanoc/trunk%40497

legallybrown/nanoc,nanoc/nanoc,remko/nanoc,hilohiro/nanoc,RubenVerborgh/nanoc,gjtorikian/nanoc,barraq/nanoc